Hull construction



, Dec. 3, 1929. Kf oEss 1,737,886

HULL CONSTRUCTION Filed Sept. 10, 1927 Jim/07.

I 30 cates the bottom line.

Patented Dec. 3, 1929 UNITED STATES HANS KARL KLOESS, F HAMBURG, GERMANY HULL CONSTRUCTION Application filed September 10, 1927, Serial No. 218,678, and in Germany May 21, 1927.

My invention relates to the designing of shipshulls and has for its object to improve the method of designing. I

The invention is based on the observation that in order to reduce the resistance to the forward movement of a ship, the water which as the ship moves ahead accumulates and is dammed up at the how, should be given an opportunity to flow off rapidly and smoothly backwards and with the least possible resistance, that is to say, along the shortest possible paths. In order to attain this object, I so .211- range the frames of the vessel which are parallel to each other in the bow and the stern of the vessel that they form an angle with the horizontal, the frames in the bow of the vessel preferably forming a larger angle than the frames in the stern.

Reference is made to Figs. 1 and 2 of the an accompanying diagrammatic drawing showing by way of illustration the principle herein involved, the frames being indicated in the usual manner.

In the drawing, only the portion of the hull below the water-line of the vessel is indicated, said water-line being designated by the line WW. The lines A and A including the broken lines,'designate the side-walls of the central portion of the hull, while B indi- O -O is the longitudinal symmetrical plane of the vessel. As shown in the drawing, the bottom line B forms with the lines A and A andthe waterline WW a rectangle, of which 0, O is the v symmetrical plane. A line drawn from O to either 0 or O and marked in the drawing S0 constitutes the principal diagonal of the vessel, while the lines K- and K are the bilge lines. Thus, the lines B, K and A and B K and A respectively indicate the master frame of the vessel.

As appears from Fig. 1 of the drawing the frames S19 S are parallel to each other ,and to the lines K and K With a view of decreasing the resistance, the edges resulting from this construction may be rounded oil as indicated by the small rounded broken line at the right hand lower; side of Figs. 1 and 2.

Fig. 2 represents a modified embodiment of horizontal is designated (1 'each other as to eachgroup, the

the invention which is particularly distinguished by the fact that the inclination of the frames in the bow of the vessel relative to the horizontal as represented by the b"ttomline B is different from the inclination in the stern. One half of the figure shows the inclination of the frames at the bow, and the other half the inclination ofthe frames at the stern, the frames of the stern shown on the left of Fig.2 being less steeply inclined 5 than the frames at the bow shown on the right of Fig. 2, which arrangement is a useful expedient to prevent the stern of the vessel from sinking too deep into the water in the case of very high velocities.

In Fig. 2, the angle formed by the frames at the bow of the vessel with the horizontal is designated 02 while the angle formed by the frames at the stern of the vessel with the The dash-anddot lines on the left half of Fig. 2 indicate the position of the frames at the bow of the vessel, while the full lines S198 and Sp, indicate the position of the frames at the stern of the vessel.

While I have described the invention with reference to certain particular embodiments, I desire thatit be understood that modifications may he made, and thatno limitations upon the invention are intended other than those imposed by the scope of the appended claim.

I claim In the hull construction of a sea-vessel, the combinatioh of groups of frames parallel to rames included in the group at the bow of the vessel being inclined relative to the horizontal at a larger angle than the frames included in the group at the stern of the vessel.

In testimony whereof I have afiixed my signature.

HANS KARL KLOESS. 

